Which of the following actions is considered a violation of the Uniform Code of Military Justice?

The answer is comprehensive because each of the listed actions constitutes a violation of the Uniform Code of Military Justice (UCMJ).

Conduct unbecoming an officer encompasses behaviors that negatively reflect on the officer's character or the military's integrity, such as engaging in dishonorable acts or actions that undermine the trust placed in them by the public and their subordinates.

Failing to report for duty directly undermines military discipline and readiness, as prompt service and accountability are vital for the effective functioning of military operations. It is a breach of a service member's obligation to fulfill their duties.

Unauthorized absence, sometimes referred to as "AWOL" (Absent Without Leave), is a serious offense as it can disrupt unit cohesion and mission effectiveness. Service members are expected to comply with orders regarding their location and availability to perform their duties.

Recognizing that all these actions fall under specific articles of the UCMJ emphasizes the importance of discipline and proper conduct within military ranks. Hence, collectively they highlight the severity of maintaining standards expected of military personnel.